Pencil.



J. N. TURNER.

PENCIL. APPLICATION FILED MAY 22, 1911.

Patented Jan. 21, 1913.

INVENTOR WITNESSES: 7

ATTOREY sosnrn N. TURNER, comm, or BROOKLYN, NEW

we smrns time orrren. f

or NEW YORK, N. Y., ASSIGNOIB. 'ro nnnanm rnnnn. rENcrL roan, A CORPORATION or New roan.

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Specification of Letters Patent. Patgnted Jan. 21 1913 Application filed may 22, 1811. Serial No. 828,887.

To'alt 'ui/wm it may concern:

Be it known that I, Josnrn N. TURNER,

a subject of the King of Great Britain, residing in the city of New York, county of Kings, and State of New York, have invented certain new and useful Improvements in Pencils, of which the following is a specification.

This invention relates to pencils of the type commonly known as mechanical pencils, consisting of a suitable holder and means therein for moving. a stick of lead in the direction of the length of the pencil.

More particularly, the invention relates to pencils of this type in which means are provided for moving the stick of lead in both directions, to carry its 'end beyond the i is a perspective view end of the holder to operative position or to retract it within the casing to inoperative position.

The object of struct. a pencil of this t manufactured at very object is accomplished by a marked simplification of the structure, .such that but a small number of parts are employed, these parts /may be made and assembled at very low cost, and metallic tubing of light weight may be used in making all of the required parts.

The preferred embodiment of the invention is illustrated in the accompanying pe that it'may be drawings, in which- Figure 1 is a perspective view of the com-- encil; Fig. 2 is a perspective view of the parts of the casing Fig. 3 is a the lead-holder; Fig. of the member within the casing coasting with the lead-holder; Fig. 5 is a perspectiveview of the other member of the casing; and Fig. 6 is a lonpleteone o perspective view of gitudinal sectional view of the complete pencil.

Referring to these drawings, the pencil consists of four tubular metalllc parts, two

. of these parts constituting the casing of the pencil and the other two the operating memers lying within the casing. The two parts constituting the casing are shown at 7 and 8 the invention is to so conowcost, and this in Figs. 2 and 5 respectively. The part 8 1s a metallic tube closed at one end and having near the other end a circumferential bead 9. The part 7 is tapered at one end as shown at 10, and at the other end of this taper is provided with two circumferential beads 11 and 12. At its opposite end, the part 7 is rovided with a screw-thread 13.

Thelea -holder is shown at 14 in Fig. 3. It consists of a tubular metallic-piece provided with a screw-thread 15 adapted to (:0-

act with the screw-thread 13 on the part 7. The lead-holder is also provided with a lengthwise groove 16. At one end, the lead-' holder is contracted to a small diameter and is split as shown at 17, so that this end may be caused to grip the end of a stick of lead.

The fourth part employed in the construction of the pencil is shown at 18 in Fig. 4:. It consists of a tubular metallic piece provided with a lengthwise internal projection- 19.

In assembling the parts of the pencil, the

lead-holder 14 is inserted within the part 7 of the casing by screwing it into the same,

the thread 15 engaging and co-acting with the thread 13 on the part 7. The part 18 is then ositionedupo'n the threaded end of the lea -holder 14 projecting beyond the threaded end of' the part 7, the internal projection 19 on the part 18 lying within the lengthwise groove 16 in the lead-holder 14. The part 18 and the threaded portion of the holder 14: are of substantially the same diameter. The part 8 of the casing is then moved over the part 18 and the adjacent end of the part 7, until the bead 9 thereof overlies the head 12 on the part 7. The end of the part 8 projecting beyond the bead 9 is then contracted, so that it lies snugly upon the portion of the part 7 between the beads 11 and 12 thereof. The coaction of this contracted portion of the part 8 with the beads 11 and 12 ositions the two parts 7 and 8 of the casing relatively, so that they are secured against relative lengthwise movement but may be rotated relatively as desired. The internal diameter of the part 8 ot the casing is substantially. the same as the externai diameter the other havinga threaded connection with the other member of the casing. These two members lyin within the casing are splined togetherfsot at they may not rotate relatively, but can move one relatively to the other in the direction of the length of the pencil. Thus, by turning the part- 8 of the casing relatively to the part 7,. the member 18, rotating with the part 8, will cause the lead-holder 14 to turn relatively to the part 7 of the casing, and the coacting screwthreads on the holder 14 and part 7 will cause the holder to move relatively to the part 7 int-he direction of the length of the encil, the spline connection between the holder and the member 18 permitting such lengthwise movement. In the way, the holder 14 be advanced or retracted as may be desired, to position the stick of lead 20 in the holder 14 for use or for protection by the casing. v v

The construction above described possesses the advantage that it provides "means for moving'the stick of lead positivel in both directions, and when the stick of ead is worn away to a substantial extent, the holder 14 may be advanced until its split end isprojected through the open end of the part 7 of the casing to permit of inserting another piece of lead therein.

The construction described. is one of marked simplicity, rmitting of the manufacture of'the encils at very low cost. It

consists ofbut our parts, all of which may be made from metallic tubing and given therequisite form by pressing or rolling operations. This simphcity results largely from the provision of a single part 14 w ich is provided with means for holding'the stick of lead, and also wi h the means whereby,

- the stick of lead is oved in the directioii of the length of the pencil to operative or inoperative position. The latter means consists, so far as the part 14 is concerned, of

' both the thread for engagement with the (x)- acting thread on the casing and the lengthwise groovecoacting with the projection 19 on the interior of the casing.

-Theaeonstruction above described and the drawing may be modified parts-* willbe held in various respects without departing from the spirit of the invention. -For instance,

made in two parts-instead of one, if that should be desirable for any reason.- Thus, if it be desired to apply a lacquer to the tapered end of the casing; indicated by the es the invention may beemployed in pens as numeral 10, but not to the body portion of the part 7, these two portions may be'separately made and thereafter secured together. In some cases, it may be desirable to make these two parts separately to avoid the application of lacquer to the body portion of the part7, since such lacquer might obstruct the free turning movement of that part within the part v8 of the casing.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is as follows 1. A pencil comprising the combination of a tubular casing of thin metal open at one end, a tubular member of thin metal havin one end rovided with a spiral threa and projecting within the open end of the casing and having the other end tapered and projecting beyond the end of the casing, said member and easing being secured together but capable of relative rotation, a tubular lead-holder within the cas ing and member provided on its exterior with a spiral thread enga g the thread on said member and with a 'engthwise'groove, said holder having-its end adjacent to the ta red end of the member formed to receive and hold a piece of lead, and a tubular piece within and secured to the casing and provided with an integral inwardly extending projection entering the lengthwise groove in the lead-holder to effect a spline between the casing and the lead-holder, substantially as set forth. w 2. A pencil formed of four tubular pieces of thin metal, one of said pieces being a casing open at one end, the second of said pieces being a member having oneend provided with a spiral thread andprojecting within the open end of the casing and having the other end tapered and extending beyond the end of the casing, said member and casing being secured together but capable of relative rotation, the thirdof said pieces being a lead-holder lying within the casing and member and provlded onits exterior surface with a spiral thread engaging the thread on said member and with a length' wise groove, said holder having its end ad'- jacent to the tapered end of the member formed to receive and hold a piece of lead,

Loewe and the fourth one of said pieces being 10- This specification signed and witnessed eated within and secured to the casing and this 16th day of May, 1911.

provided with an inwardly extending projection enterin the lengthwise groove in JOSEPH TURNER the holder to e ect a spline between the cas- Witnesses:

ing and the lead holder, substantially as set FRANK BYERS,

forth. OHASJATHEY. 

